Supplementary Table 1.
Characteristics of the men included (n=222)
| Variables | Number of men (n) | Median (25–75 quartile) or mean±s.d. |
|---|---|---|
| Semen volume (ml)# | 222 | 3.80 (3.10–4.80) |
| Sperm concentration (106 ml−1)# | 222 | 42.85 (21.75–62.23) |
| Sperm motility (%) | 222 | 35.27±13.60 |
| Progressive motile spermatozoa (%) | 222 | 29.97±11.31 |
| VSL (µm s−1) | 222 | 23.71±3.66 |
| VCL (µm s−1) | 222 | 31.83±4.54 |
| VAP (µm s−1) | 222 | 25.61±3.69 |
| Duration of abstinence (day)# | 222 | 4 (3–5) |
| Morphologically normal (%)# | 185 | 5.61 (4.69–6.16) |
| Intact acrosome rate (%)# | 186 | 59.82 (57.33–62.74) |
| Serum 25(OH) D (ng ml−1)# | 160 | 26.17 (19.61–31.99) |
| Seminal plasma 25(OH) D (ng ml−1)# | 192 | 6.55 (4.30–9.62) |
| Serum AMH (ng ml−1)# | 157 | 8.94 (6–14.4) |
| Seminal plasma AMH (ng ml−1)# | 92 | 0.35 (0.15–1.04) |
| Serum INHB (pg ml−1)# | 96 | 94.80 (73.50–122.50) |
| Seminal plasma INHB (pg ml−1)# | 94 | 97.45 (55.58–177.50) |
| Seminal plasma fructose (mmol l−1) | 166 | 18.39±7.70 |
| Seminal plasma α-glucosidase (U l−1) | 167 | 347.45±151.98 |
All the men lacked serious comorbidities. Data are reported as mean and s.d. for variables normally distributed or as median and interquartile range for variables not normally distributed. #Indicates that the normality test revealed a lack of conformity to a normal distribution. VSL: straight-line velocity; VCL: curvilinear velocity; VAP: average path velocity; AMH: anti-Müllerian hormone; INHB: inhibin B; s.d.: standard deviation